cora-code 0.13.0

CLI-first AI code review — BYOK, diff/scan/branch, pre-commit hooks
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use thiserror::Error;

/// Typed error enum for the cora engine layer.
///
/// Engine functions return `Result<T, CoraError>`. The CLI/command layer
/// continues to use `anyhow::Result` and converts via `?` (automatic
/// `From<CoraError> for anyhow::Error` provided by `thiserror` + anyhow interop).
#[derive(Debug, Error)]
#[allow(dead_code)]
pub enum CoraError {
    /// HTTP request to LLM API failed (network, DNS, timeout, etc.)
    #[error("LLM API request failed: {0}")]
    LlmRequest(#[from] reqwest::Error),

    /// LLM API returned a non-2xx status code.
    #[error("LLM API returned status {status}: {body}")]
    LlmStatus { status: u16, body: String },

    /// Failed to parse LLM JSON response.
    #[error("failed to parse LLM JSON response: {0}")]
    LlmParse(String),

    /// Error during streaming.
    #[error("streaming error: {0}")]
    LlmStream(String),

    /// JSON repair still failed after fix attempt.
    #[error("JSON repair failed: {0}")]
    LlmJsonRepair(String),

    /// YAML config parse error.
    #[error("config parse error: {0}")]
    ConfigParse(String),

    /// Config file read error.
    #[error("config read error: {0}")]
    ConfigRead(String),

    /// No API key configured.
    #[error("no API key found")]
    NoApiKey,

    /// Diff exceeds maximum allowed size.
    #[error("diff too large ({actual} chars, max {max})")]
    DiffTooLarge { actual: usize, max: usize },

    /// Invalid git ref (shell metacharacters or path traversal).
    #[error("invalid ref: {0}")]
    InvalidRef(String),

    /// Git command execution failed.
    #[error("git command `{command}` failed: {stderr}")]
    GitCommand { command: String, stderr: String },

    /// Not inside a git repository.
    #[error("not inside a git repository")]
    NotInGitRepo,

    /// HEAD is detached (cannot determine branch name).
    #[error("HEAD is detached — cannot determine branch name")]
    HeadDetached,

    /// Cache I/O error (read/write filesystem operations).
    #[error("cache I/O error: {0}")]
    CacheIo(#[from] std::io::Error),

    /// JSON serialization of cache failed.
    #[error("cache serialize error: {0}")]
    CacheSerialize(String),

    /// File scanner error.
    #[error("scanner error: {0}")]
    ScannerError(String),

    /// Auth file read/write error.
    #[error("auth error: {0}")]
    AuthError(String),

    /// Hook install/uninstall error.
    #[error("hook error: {0}")]
    HookError(String),

    /// LLM request timed out.
    #[error("LLM request timed out: {0}")]
    Timeout(String),
}
// test comment for cora review